This study, involving 287 Grade 7 students, compared the achievement of Industrial Arts Curriculum Project students in "The World of Construction" course with students in traditionally-taught industrial arts courses. A third group of students with no previous industrial arts experience was used as a control group. The General Industrial Arts Test (Form A) produced by Educational Testing Services and the "World of Construction" Comprehensive Examination II were administered as posttest instruments to intact classroom groups at the conclusion of the 1969-70 school year. The statistical analysis of the data used item-analysis, modified t-test, and stepwise multiple regression analysis. Findings revealed that the Industrial Arts Curriculum Project (IACP) students performed significantly better (at the .05 level or lower) than the traditionally-taught industrial arts students and the parochial students on the World of Construction Comprehensive Examination II. There were no differences (at the .05 level) among the three groups on the General Industrial Arts Test. The student I.Q. was found to be a valid predictor of the mean achievement level of all three groups, whereas the age of the student was not found to be a significant predictor of student performance. This Ph.D. dissertation was submitted to the Ohio State University. (GR)